黑龙江省春播期较大降水天气气候特征分析

Analysis on the weather and climate characteristics of precipitation in spring sowing period in Heilongjiang Province

本文利用黑龙江省82个站1973-2008年春播期间(4-5月)的24 h降水资料,结合美国NCEP/NCAR再分析资料,分析研究了黑龙江省春播期较大降水出现的时间与空间分布特征、相关天气系统特征。通过分析归纳,得出以下结论:黑龙江省春播期间的较大降水在时间和空间上都有各自的规律;造成黑龙江省春播期较大降水的天气系统主要有蒙古气旋、华北气旋、江淮气旋、东北气旋等6种。

Using precipitation data of the 82 stations from 1973 to 2008 during the spring sowing period coupled with the NCEP/NCAR daily reanalysis data to analyze the temporal and spatial distribution of the occurrence of large precipitation. The results show that the temporal and spatial distribution of the precipitation has its own rules; there are six kind of synoptic systems caused the precipitation during the spring sowing period in Heilongjiang province, such as Mongolian cyclone, north cyclones, Jianghuai cyclone, and Northeast cyclones, etc.